Cut a long story short, I purchased two pairs of trainers from ASOS, one of which I returned.
The first transaction was for a total spend of -£75, the refund for one item was +£58.50.
In my ASOS history I would expect to seep my average expenditure and total spend to both be £16.50.
But they are both £75.
Iny my spending section the category “shopping” uses the correct amount.